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A bag has 1 red, 3 blue, and 4 green marbles. Outcome A is drawing a green marble on the first draw. Outcome B is drawing a green marble on the second draw without replacing the first marble. What is P(B|A)?
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A bag has 1 red, 3 blue, and 4 green marbles. Outcome A is drawing a green marble on the first draw. Outcome B is drawing a green marble on the second draw without replacing the first marble.

What is P(B|A)?
P(B|A) = ?/?

User Cmjohns
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1 Answer

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After first drawing (if you have drawn a green marble) there are 7 marbles: 1 red, 3 blue, 3 green. P(B|A) = 3/7.
User Louise K
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